EP 3800413 A1 20210407 - SLUDGE DRYING APPARATUS AND PROCESS
Title (en)
SLUDGE DRYING APPARATUS AND PROCESS
Title (de)
VORRICHTUNG UND VERFAHREN ZUR SCHLAMMTROCKNUNG
Title (fr)
APPAREIL DE SÉCHAGE DE BOUES ET PROCÉDÉ
Publication
Application
Priority
IT 201900017936 A 20191003
Abstract (en)
A sludge drying apparatus (1), comprising:• a first indirect dryer (2a) and a second indirect dryer (2b), each of which comprises:- a casing-like body (3a; 3b) containing the sludge;- a heating jacket (7a; 7b) fitted around the casing-like body (3a; 3b);- a rotating mixer (8a; 8b) inside the casing-like body (3a;3b);• a first heating means (11) for heating one of the two jackets (7a, 7b) so as to impose a pre-drying condition on one of them, i.e. a heating at a temperature comprised between 90°C and 120°C;• a second heating means (12) for heating one of the two jackets (7a, 7b) so as to impose a drying condition on one of them, i.e. a heating at a temperature comprised between 150°C and 250°C;• a control system (10) configured to impose the pre-drying condition on the first dryer (2a) and, simultaneously, the drying condition on the second dryer (2b), or vice versa.
IPC 8 full level
F26B 3/20 (2006.01); F26B 3/22 (2006.01); F26B 11/16 (2006.01); F26B 23/00 (2006.01); F26B 25/22 (2006.01)
CPC (source: EP)
F26B 3/20 (2013.01); F26B 3/22 (2013.01); F26B 11/16 (2013.01); F26B 23/002 (2013.01); Y02P 70/10 (2015.11)
Citation (applicant)
- US 6171499 B1 20010109 - BOUCHALAT YOUSSEF [FR]
- US 6138381 A 20001031 - AABYHAMMAR TOMAS [SE]
- US 2013014678 A1 20130117 - KNOER PETER [CH], et al
- WO 2006024696 A1 20060309 - VAELIMAEKI HEIMO [FI]
Citation (search report)
- [XAI] US 2011232121 A1 20110929 - CEREA GUISEPPINA [IT]
- [A] WO 2018083717 A1 20180511 - HEDINN HF [IS]
- [A] KR 20030072872 A 20030919 - KORMAC CO LTD [KR]
- [A] US 2019254472 A1 20190822 - PALSON GUNNAR [IS]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3800413 A1 20210407; EP 3800413 B1 20230607; EP 3800413 C0 20230607
DOCDB simple family (application)
EP 20197440 A 20200922